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$322+ Cheap flights from Seattle (SEA) to Helsinki (HEL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 85 days in advance, depart on a Sunday or Monday and return on a Wednesday

Cheap flight deals from Seattle to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated agosto 14, 2025.

Round-trip from

$322
(Mytrip)

Popular in

July

Cheapest in

January

Average price

$905

Good round-trip deal

$848 or less

Good one-way deal

$348 or less
From Seattle/Tacoma Intl to Helsinki-Vantaa
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Highest demand for flights based on searches. 20% potential increase in price ($208 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Helsinki-Vantaa.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Helsinki-Vantaa.
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Find flight deals from Seattle to Helsinki

Cheapest flights from Seattle to Helsinki
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This Mytrip deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/54:20 pmSEA - HEL
1 stop32h 15mScandinavian Airlines
mar. 10/214:05 pmHEL - SEA
1 stop31h 55mScandinavian Airlines
Deal found 8/14$322
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/14:20 pmSEA - HEL
1 stop32h 15mScandinavian Airlines
lun. 10/69:05 pmHEL - SEA
2 stops50h 55mScandinavian Airlines
Deal found 8/13$323
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/14:20 pmSEA - HEL
1 stop32h 15mScandinavian Airlines
mar. 10/79:05 pmHEL - SEA
2 stops26h 55mScandinavian Airlines
Deal found 8/14$344
This Scandinavian Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/14:20 pmSEA - HEL
1 stop32h 15mScandinavian Airlines
sáb. 10/119:00 pmHEL - SEA
1 stop27h 00mScandinavian Airlines
Deal found 8/14$395

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.

Fly from

Seattle

Fly to

Helsinki

Route

Depart

Return

Price

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

dom. 10/5

4:20 pm-10:35 am

1 stop32h 15m

Helsinki-Vantaa

mar. 10/21

4:05 pm-2:00 pm

1 stop31h 55m

$322

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

mié. 10/1

4:20 pm-10:35 am

1 stop32h 15m

Helsinki-Vantaa

lun. 10/6

9:05 pm-2:00 pm

2 stops50h 55m

$323

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

mié. 10/1

4:20 pm-10:35 am

1 stop32h 15m

Helsinki-Vantaa

mar. 10/7

9:05 pm-2:00 pm

2 stops26h 55m

$344

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

mié. 10/1

4:20 pm-10:35 am

1 stop32h 15m

Helsinki-Vantaa

jue. 10/9

9:00 pm-2:00 pm

1 stop27h 00m

$395

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

sáb. 9/20

9:39 pm-4:55 pm

3 stops57h 16m

$370

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

vie. 12/19

2:35 pm-12:55 pm

1 stop12h 20m

$904

SeattleHelsinki

SEA - HEL

SEAHEL

Seattle/Tacoma Intl

mar. 12/23

5:40 pm-8:00 am

2 stops52h 20m

$930

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Best time to book a flight from Seattle to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Helsinki

How far ahead should I book a flight from Seattle to Helsinki?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Helsinki. Price data was last updated on August 8, 2025.

The best time to book flights from Seattle to Helsinki is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Helsinki?

Currently, November is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $444). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,082). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to HEL?

Find hourly flight availability from Seattle to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

It’s optimal to fly from Seattle to Helsinki in the morning. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the afternoon.

How much does it cost to fly round-trip from Seattle to Helsinki?

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated agosto 14, 2025.
Get a feel of what it's like to fly with Finnair, Scandinavian Airlines, and American Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,321 reviews

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Finnair
7.6
Good
1,321 reviews
Finnair
7.6
Good
1,321 reviews

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Scandinavian Airlines
7.4
Good
1,468 reviews
Finnair
7.6
Good
1,321 reviews

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,321 reviews

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Icelandair
7.0
Good
526 reviews
Finnair
7.6
Good
1,321 reviews

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
British Airways
6.7
Okay
7,266 reviews
Finnair
7.6
Good
1,321 reviews

Boarding

7.6

Overall

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Helsinki?

    To fly from Seattle to Helsinki, you need to book a flight from Seattle/Tacoma Intl (SEA) to Helsinki-Vantaa (HEL). Nonstop flights to Helsinki-Vantaa from Seattle/Tacoma Intl take 9h 30m on average. When it comes time to book airfare, you have a few options: there are 3 outbound flights from Seattle/Tacoma Intl to Helsinki-Vantaa offered by 7 different airlines.

  • How popular is this Seattle to Helsinki flight route?

    This flight path from Seattle/Tacoma Intl to Helsinki-Vantaa was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Seattle to Helsinki round-trip?

    Cheapflights users have booked flights from Seattle to Helsinki round-trip from $322. Other airlines that can offer you cheap pricing are Icelandair, from $426, and Finnair, from $558. Users have found that Scandinavian Airlines is 61% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Seattle to Helsinki?

    Consider American Airlines (38%), Alaska Airlines (38%) or Finnair (38%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Helsinki.

  • What are the cheapest flights from Seattle to Helsinki?

    The cheapest flight price from Seattle to Helsinki is $347. On average you can expect to pay $792. The most popular route, (Seattle/Tacoma Intl - Helsinki-Vantaa), can usually be booked for $323.

  • Can I find deals for flights from Seattle to Helsinki that include hotel bookings?

    Yes. In addition to deals on Seattle to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Helsinki.

  • Can I find deals for business class flights from Seattle to Helsinki?

    Yes. Cheapflights offers flight deals from Seattle to Helsinki by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Helsinki?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $444). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,082). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Lahti

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Alternative routes for Seattle to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Seattle to Helsinki

Discover the top 7 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$322Average$413FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$426Average$772FlexibilityNo cancel feeOn-time76%
FinnairCheapest$558Average$990FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$569Average$964FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$582Average$901FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$583Average$892FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$601Average$1,093FlexibilityNo cancel feeOn-time71%

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